Eat Chess: Royal Merge Plus
Solo & Versus Board Puzzle
Only for Mac
Free
Mac
Royal Merge is a chess merge puzzle played on a compact 4×4 board. Pick one piece, move it by simplified chess rules, and merge it with a matching piece of the same type and level. Pawns become Knights, then Bishops, Rooks, Queens, Kings, and higher-level Pawns.
The board fills fast. A quiet setup move can matter as much as the merge it opens.
HOW IT PLAYS
Select a piece. Legal squares light up. Move to an empty square, merge with a match, or use Castle Swap when a same-level King and Rook line up with a clear path.
Every legal move into empty space and every Castle Swap adds a new Pawn. Pawn Spawn adds a Pawn on every second merge. Royal Reserve drops a Level 1 Pawn, Knight, Bishop, or Rook after every five successful actions. Every arrival can help, and every arrival takes space.
Back-to-back merges build a combo multiplier. A move into empty space or a Castle Swap breaks the chain, so timing matters.
SOLO
Play without a clock, add a Player Clock, set an Increment, or cap the run with a Turn Limit. Official Solo runs can count toward local records, Game Center leaderboards, and achievements.
Solo also includes Hint. It points out possible moves, costs part of your current score, and never plays the move for you.
VERSUS
Two players share one board on the same device. Player 1 starts. After each legal action, the turn passes and the board switches to the active player's chosen chess set. Pieces are shared, not owned. The active player scores only when they make a merge.
Versus supports per-player clocks, Increment, a shared Game Clock, and Turn Limit. If a timed player clock hits zero, Clock Collapse keeps 20% of that player's score, resets the clock, and leaves that player on turn. The match continues.
COSMETIC OPTIONS
On Mac, Royal Extras are included free. Start with the Quiet Royal theme, switch among every included theme and chess set, and play without purchase or restore controls. Cosmetics never change movement, scores, spawns, hints, timers, Castle Swap, leaderboards, or match results.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Updated translations for combo feedback and How to Play. Default player labels in Versus now follow the selected language.
The developer, David Lew, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- David Lew
- Size
- 23 MB
- Category
- Board
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
English and 10 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © 2026 Eat Chess
